The pressure is being mounted on President Obama to take steps to end the force-feeding of hunger-striking prisoners at Guantanamo Bay. Wondering just how brutal force-feeding is? Yasiin Bey (better known as Mos Def) collaborated with the human rights organization Reprieve and filmmaker Asif Kapadia to document himself actually undergoing the procedure, in accordance with the standard operating guidelines found in leaked military documents. The resulting four-minute film is extremely disturbing: